Fishing reel

ABSTRACT

An outer periphery of the other side of a rotating shaft  2   a  of a rotating member  2  is pivotally supported via a hollow cylindrical portion  3   a  of a gear  3  by a waterproof bearing  11  fitted in a reel body  1,  while an outer periphery of one side of the rotating shaft  2   a  of the rotating member  2  is pivotally supported by a waterproof bearing  12  fitted on a cover  10.  A drive gear  2   b  is integrally formed on the outer periphery of the rotating shaft  2   a  on the one side thereof, while a noncircular detent portion b, which is formed by a collar portion  2   c  and a pair of notches  2   d  provided on both sides thereof, a circular supporting portion a, and a circumferential groove  2   e  are formed on the outer periphery of the rotating shaft  2   a  on the other side thereof. A resilient member  13  constituted by an O-ring is fitted in the circumferential groove  2   e.  A fitting portion  3   d,  which is formed by a recessed portion formed on an inner wall surface of a central hole  3   c  of the gear  3  on one side thereof, is fitted over the noncircular detent portion b and the circular supporting portion a so as to be prevented from rotating. An interlocking gear  9  meshes with a tooth portion  3   b  of the gear  3.

BACKGROUND OF THE INVENTION

[0001] The present invention relates to a fishing reel in whichimprovements are made to prevent play between a rotating shaft which isrotated by the rotation of a drive mechanism provided in a reel body anda rotation-prevented fitting portion of a gear.

[0002] In a fishing reel, a take up drive mechanism and an oscillationmechanism are conventionally accommodated inside a reel body, and therotatively driving force of a handle which is rotatably attached to thereel body is transmitted to the takeup drive mechanism and theoscillation mechanism by means of a gear train.

[0003] The gear is normally fitted over a shaft in such a manner as tobe prevented from rotating, and is arranged such that a noncircularportion such as a spline surface or slot is formed in the shaft, while ahole having a similar shape is formed in the gear, and the two portionsare fitted to each other. In this case, since play is likely to occur tothe noncircular portion, and alignment between the shaft and the gear isdifficult, there are cases where the gear becomes eccentric, so thatthere has been a demand for prompt improvement.

[0004] To overcome the above-described drawback, JP-A-9-313079 disclosesa technique in which a circular hole and a noncircular portion areformed in a gear, and the noncircular portion of the gear is engagedwith a plate having a projection engaging with a noncircular portion ofa shaft portion while alignment is being made between the circularportion of the shaft portion and the circular portion of the gear, so asto provide a detent while increasing the alignment accuracy.

[0005] However, with the arrangement of the above-described publication,although the alignment accuracy improves, since the prevention ofrelative rotation of the gear and the shaft is effected by means of aseparate member, radial play is large, and it is impossible to suppressplay in the direction of thrust. Therefore, abnormal noise and vibrationoccur during normal winding.

[0006] Furthermore, since the number of component parts used is large,and the component parts are difficult to assemble, the fabrication andassembly cost becomes high, rendering the reel expensive.

[0007] The problem that the invention is to solve is that if anoncircular portion such as a spline surface or slot is formed in theshaft, while a hole having a similar shape is formed in the gear, andthe two portions are fitted to each other, play is likely to occur tothe noncircular portion, and alignment between the shaft and the gear isdifficult, so that there are cases where the gear becomes eccentric.

[0008] To overcome this drawback, if a circular hole and a noncircularportion are formed in a gear, and the noncircular portion of the gear isengaged with a plate having a projection engaging with a noncircularportion of a shaft portion while alignment is being made between thecircular portion of the shaft portion and the circular portion of thegear so as to provide a detent while increasing the alignment accuracy,although the alignment accuracy improves, since the prevention ofrelative rotation of the gear and the shaft is effected by means of aseparate member, radial play is large, and it is impossible to suppressplay in the direction of thrust. Therefore, abnormal noise and vibrationoccur during normal winding.

[0009] Furthermore, since the number of component parts used is large,and the compartment parts are difficult to assemble, the fabrication andassembly cost becomes high, rendering the reel expensive.

SUMMARY OF THE INVENTION

[0010] In view of the above-described drawbacks, an object of theinvention is to provide a fishing reel in which the alignment accuracyis high and the number of component parts used is small, and whichfacilitates assembly and is capable of preventing the occurrence ofabnormal noise and vibration.

[0011] To overcome the above-described problems, the gist of theinvention according to claim 1 lies in a fishing reel including a reelbody for accommodating components of a reel and a drive mechanismprovided in the reel body for winding a fishline around a spool,characterized by comprising: a resilient member interposed between arotating shaft which is rotated by the rotation of the drive mechanismand a rotation-prevented fitting portion of a gear so as to prevent playbetween the gear and the rotating shaft.

[0012] The gist of the invention according to claim 2 lies in a fishingreel including a reel body for accommodating components of a reel and adrive mechanism provided in the reel body for winding a fishline arounda spool, characterized in that a rotating shaft which is rotated by therotation of the drive mechanism and a gear are fitted to each other insuch a manner as to be prevented from rotating relative to each other,that a hollow cylindrical portion extending from the gear in an axialdirection of the rotating shaft is formed, and that a bearing isinterposed between the hollow cylindrical portion and the reel body soas to rotatably support the rotating shaft by the reel body.

[0013] The gist of the invention according to claim 3 lies in that theresilient member is interposed between fitting portions of the gear andthe rotating shaft which is fitted to the gear in such a manner as to beprevented from rotating with respect to the gear so as to prevent playbetween the gear and the rotating shaft.

[0014] The gist of the invention according to claim 4 lies in that thefitting portions of the gear and the rotating shaft are respectivelyformed by a noncircular detent portion and a circular supportingportion, and the resilient member is interposed between the circularsupporting portion and a circular hole portion of the gear so as toprevent the play between the gear and the rotating shaft.

[0015] The present disclosure relates to the subject matter contained inJapanese patent application No. 2000-226721 (filed on Jul. 27, 2000),which is expressly incorporated herein by reference in its entirety.

BRIEF DESCRIPTION OF THE DRAWINGS

[0016]FIG. 1 is a cross-sectional plan view of an essential section of aspinning reel for fishing in accordance with a first embodiment of theinvention;

[0017]FIG. 2 is an enlarged cross-sectional plan view of the essentialsection of the spinning reel for fishing in accordance with the firstembodiment;

[0018]FIG. 3 is an enlarged explosive cross-sectional plan view of arotating shaft and a gear of the spinning reel for fishing in accordancewith the first embodiment;

[0019]FIG. 4 is an explosive perspective view of the rotating shaft andthe gear in accordance with the first embodiment;

[0020]FIG. 5 is an enlarged cross-sectional plan view of the rotatingshaft and the gear in accordance with a second embodiment;

[0021]FIG. 6 is an enlarged cross-sectional plan view of the rotatingshaft and the gear in accordance with a third embodiment;

[0022]FIG. 7 is an enlarged cross-sectional plan view of the rotatingshaft and the gear in accordance with a fourth embodiment;

[0023]FIG. 8 is an explosive perspective view of the rotating shaft andthe gear in accordance with the fourth embodiment;

[0024]FIG. 9 is a cross-sectional side elevational view of an essentialsection of the spinning reel for fishing in accordance with a fifthembodiment and an enlarged cross-sectional side elevational viewthereof; and

[0025]FIG. 10 is an exploded perspective view of the rotating shaft andthe gear in accordance with the fifth embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENT

[0026] In accordance with the invention according to claim 1, a hollowcylindrical portion 3 a of a gear 3 is fitted over a circular supportingportion a of a rotating shaft 2 a, the prevention of rotation iseffected by a noncircular detent portion b of the rotating shaft 2 a anda fitting portion 3 d, 3 e, or 3 g formed by a recessed portion in thegear 3, and the driving force of the rotating shaft 2 a is transmittedto the gear 3. Therefore, as compared with the conventional techniques,the number of component parts used is small, and the assembly isfacilitated, so that it is possible to lower the fabrication cost andthe assembly cost.

[0027] In addition, a hollow cylindrical portion 39 a of a gear 39 isfitted over a circular supporting portion a of a rotating shaft 35, theprevention of rotation is effected by the noncircular detent portion bof the rotating shaft 35 and a fitting portion 39 d formed by a recessedportion in the gear 39, and the driving force of the rotating shaft 35is transmitted to the gear 39. Therefore, as compared with theconventional techniques, the number of component parts used is small,and the assembly is facilitated, so that it is possible to lower thefabrication cost and the assembly cost.

[0028] Since a resilient member 13 or a resilient member 31 constitutedby an O-ring is interposed between the circular supporting portion a ofthe rotating shaft 2 a and the hollow cylindrical portion 3 a of thegear 3 or between the circular supporting portion a of the rotatingshaft 35 and the hollow cylindrical portion 39 a of the gear 39, or aresilient member 32 constituted by an O-ring is interposed between thefitting portion 3 g and the noncircular detent portion b, the playbetween the rotating shaft 2 a and the fitting portion of the gear 3 orbetween the rotating shaft 35 and the fitting portion of the gear 39 isreduced. Since the play can be reduced to nil particularly during alight load, it is possible to prevent vibration and abnormal noiseduring normal winding.

[0029] In accordance with the invention according to claim 2, therotating shaft 2 a is fitted in the hollow cylindrical portion 3 a ofthe gear 3, and the hollow cylindrical portion 3 a is pivotallysupported by a bearing 11 to directly rotate and support the gear 3, itis possible to overcome faulty meshing due to the inclination of thegear 3. Hence, it is possible to prevent the partial wear of the toothsurfaces, prevent abnormal noise and vibration, and improve durabilityremarkably.

[0030] In accordance with the invention according to claim 3, since theresilient member 13 or the resilient member 31 constituted by the O-ringis interposed between the circular supporting portion a of the rotatingshaft 2 a and the hollow cylindrical portion 3 a of the gear 3, it ispossible to prevent abnormal noise and vibration and improve durability,and it is possible to prevent the entry of water between the rotatingshaft 2 a and the gear 3. Therefore, it is possible to provide a reelhaving high durability and high waterproofness.

[0031] In accordance with the invention according to claim 4, since theprevention of rotation is effected by the noncircular detent portion bof the rotating shaft 2 a and the fitting portion 3 d formed by therecessed portion in the gear 3, and alignment and axial support areeffected by the circular supporting portion a of the rotating shaft 2 aand the hollow cylindrical portion 3 a of the gear 3, the supportingaccuracy of the gear 3 becomes high. In addition, since the arrangementprovided is such that the resilient member 13 is interposed on thecircular supporting portion a, the formation of a groove for holding theresilient member 13 is facilitated, and processing is simplified. Inaddition, since the play between the fitting portions of the gear 3 andthe rotating shaft 2 a is reduced, and the play can be reduced to nilparticularly during a light load, it is possible to prevent vibrationand abnormal noise during normal winding.

EMBODIMENTS

[0032] Hereafter, a description will be given of the invention withreference to the drawings. FIGS. 1 to 4 illustrate a first embodiment ofa fishing reel in which a spinning reel for fishing is used as thefishing reel. FIG. 1 is a cross-sectional plan view of an essentialsection of the spinning reel for fishing; FIG. 2 is an enlargedcross-sectional plan view of the essential section of the spinning reelfor fishing; FIG. 3 is an enlarged explosive cross-sectional plan viewof a rotating shaft and a gear; and FIG. 4 is an explosive perspectiveview of the rotating shaft and the gear.

[0033] In the spinning reel for fishing, an opening of a reel body 1 onone side thereof is closed by a cover 10, and the cover 10 is attachedto the reel body 1 by an unillustrated screw.

[0034] An outer periphery of the other side of a rotating at 2 a of arotating member 2 is pivotally supported via a hollow cylindricalportion 3 a of a gear 3 by a waterproof bearing 11 fitted in the reelbody 1, while an outer periphery of one side of the rotating shaft 2 aof the rotating member 2 is pivotally supported by a waterproof bearing12 fitted on the cover 10.

[0035] A drive gear 2 b is integrally formed on the outer periphery ofthe rotating shaft 2 a on the one side thereof, while a noncirculardetent portion b, which is formed by a collar portion 2 c and a pair ofnotches 2 d provided on both sides of the collar portion 2 c, a circularsupporting portion a, and a circumferential groove 2 e are formed on theouter periphery of the rotating shaft 2 a on the other side thereof.

[0036] A resilient member 13 constituted by an O-ring is fitted in thecircumferential groove 2 e.

[0037] The gear 3 is fitted over the noncircular detent portion b andthe circular supporting portion a so as to be prevented from rotating.

[0038] The hollow cylindrical portion 3 a, a gear portion 3 b, and acentral hole 3 c are formed in the gear 3, and a fitting portion 3 d,which is formed by a recessed portion into which the noncircular detentportion b is fitted, is formed in an inner wall surface of the centralhole 3 c on one side thereof.

[0039] An internally threaded hole 2 f, an unloaded hole 2 g, aninternally threaded hole 2 h, and an unloaded hole 2 i are formed in therotating shaft 2 a in that order starting from a right-hand end portiontoward the left-hand side as viewed in FIG. 2.

[0040] An external thread 4 a of a handle shaft 4 is threadedly engagedin the internally threaded hole 2 f.

[0041] At this tine, an external thread 4 b of the handle shaft 4 isinserted in the unloaded hole 2 g.

[0042] When the external thread 4 b is threadedly engaged in theinternally threaded hole 2 h at the time of changing the left and rightsides of the handle shaft 4, the external thread 4 a is inserted in theunloaded hole 2 i.

[0043] A handle 14 is connected to the handle shaft 4 in such a manneras to be capable of being folded down.

[0044] A rotating shaft cylinder 5 is rotatably supported by awaterproof bearing 15 in a front portion of the reel body 1, andprojects to the front side.

[0045] A reverse-rotation preventing ratchet wheel 16 and a centralshaft cylinder 6 a of a rotor 6 are fitted over an outer periphery ofthe rotating shaft cylinder 5 on the front side of the bearing 15, andare fixed by a nut 17.

[0046] A proximal end 5 a of the rotating shaft cylinder 5 is pivotallysupported in a through hole 1 b of a bearing portion 1 a, the drive gear2 b meshes with a pinion 5 b formed integrally with a front side of theproximal portion 5 a, and the rotor 6 is supported so as to be rotatedin interlocking relation to the rotation of the handle 14.

[0047] A spool shaft 7 with a spool 18 attached to its tip is slidablyinserted in a central hole 5 c of the rotating shaft cylinder 5 in sucha manner as to be capable of reciprocating back and forth, and a slidingmember 8 is attached to a detent portion 7 a at a rear end of the spoolshaft 7 by a screw 19.

[0048] The rotor 6 is mounted on the rotating shaft cylinder 5 at itscentral shaft cylinder 6 a, and is comprised of the central shaftcylinder 61, a front wall 6 b, a large-diameter cylinder portion 6 c,and a pair of bail supporting arms 6 f and 6 g projecting forwardly fromouter peripheries of proximal portions 6 d and 6 e of the large-diametercylinder portion 6 c.

[0049] One bail supporting member 20 and the other bail supportingmember 22 are pivotally supported on outer sides of distal ends of thepair of bail supporting arms 6 f and 6 g in such a manner as to bereversible between a fishline taking-up position and a fishlinereleasing position.

[0050] An attaching portion 25 of a fishline guide roller 24 is attachedto one bail supporting member 20.

[0051] One end of a bail 26 is attached to the other bail supportingmember 21, while the other end thereof is attached to the attachingportion 25 of the fishline guide roller 24.

[0052] A fishline 27 wound around the spool 18 is paid out while beingguided by the fishlnie guide roller 24.

[0053] The sliding member 8 is formed by a plate-like body portion 8 aand a projecting portion 8 b.

[0054] A vertical engaging groove 8 c is formed in the body portion 8 a,and a laterally oriented rotation-preventing through hole 8 d is formedin the projecting portion 8 b.

[0055] Further, a screw hole 8 e which intersects therotation-preventing through hole 8 d at right angles is formed in theprojecting portion 8 b, and the screw 19 is inserted therein.

[0056] The sliding member 8 is provided in such a manner as to becapable of being guided and moved in the back-and-forth direction whileits movement in the direction of rotation with respect to the spoolshaft 7 is being restricted by an unillustrated shaft lever provided inthe back-and-forth direction of the reel body 1.

[0057] A gap is formed between opposing surfaces of the sliding member 8and an interlocking gear 9 so that they do not come into contact witheach other, so as to guide the movement of the sliding member 8 in theback-and-forth direction.

[0058] A supporting portion 1 c which is formed by a shaft cylinder isformed on an inner side wall surface of the reel body 1, and theinterlocking gerar 9 is pivotally supported on the supporting portion 1c by means of a rolling bearing 28, and is mounted on an annular baseportion 1 d constituted by a rib formed on the side wall surface.

[0059] The interlocking gear 9 is formed in the shape of a spur gear andhas a gear portion 9 a formed around its periphery, a shaft hole 9 bformed in its center, and an engaging projection 9 c formed at aneccentric position on its one side surface.

[0060] The rolling bearing 28 is inserted in the shaft hole 9 b at thecenter of the interlocking gear 9; and the rolling bearing 28 isprevented from coming off by a screw 29 which is threadedly engaged withthe supporting portion 1 c constituted by the shaft cylinder inside thereel body 1.

[0061] The engaging projection 9 c of the interlocking gear 9 isinserted in the engaging groove 8 c of the sliding member 8.

[0062] The interlocking gear 9 meshes with the gear 3 fitted over theouter periphery of the rotating shaft 2 a in such a manner as to beprevented from rotating.

[0063] In the first embodiment, the gear 3, the interlocking gear 9, andthe sliding member 8 form an oscillation mechanism whereby the spool 18and the spool shaft 7 are reciprocatable in the back-and-forthdirection.

[0064] The spool 18 is formed by a fishline winding barrel portion 18 aat an outer periphery around which the fishline 27 is wound, a collarportion 18 b on the front side, and a large-diameter cylinder portion 18c on the rear side.

[0065] In the operation of the spinning reel for fishing, if one bailsupporting member 20 and the other bail supporting member 21 are at thefishline taking-up position, and the handle 14 is rotated in a directionin which the fishline 27 is wound around the spool 18, the drive gear 2b is rotated, which in turn causes the rotating shaft cylinder 5 torotate via the pinion 5 b, thereby rotating the rotor 6.

[0066] When the drive gear 2 b is rotated, the rotating shaft 2 a isrotated, which in turn causes the gear 3 to rotate, thereby rotating theinterlocking gear 9.

[0067] As the interlocking gear 9 rotates, the sliding member 8 islinearly reciprocated by the engaging projection 9 c to linearlyreciprocate the spool shaft 7 and the spool 18. Hence, the fishline 27,while being guided by the fishline guide roller 24 provided on one bailsupporting member 20, is wound in parallel around the spool 18 which isreciprocated back and forth.

[0068] Namely, the rotating motion of the interlocking gear 9 isconverted to the linear reciprocating motion of the sliding member 8,the spool shaft 7, and the spool 18.

[0069] As for the gear 3 to which the driving force is transmitted bythe rotation of the rotating member 2, the hollow cylindrical portion 3a of the gear 3 is fitted over the circular supporting portion a of therotating shaft 2 a of the rotating member 2 in a state in which theresilient member 13 constituted by the O-ring is interposed between thecircular supporting portion a of the rtating shaft 2 a and the hollowcylindrical portion 3 a. Further, the prevention of rotation is effectedby the noncircular detent portion b of the rotating shaft 2 a and thefitting portion 3 d formed by the recessed portion in the gear 3, andthe driving force of the rotating shaft 2 a is transmitted to the gear3.

[0070] If the fishing reel is constructed as described above, the hollowcylindrical portion 3 a of the gear 3 is fitted over the circularsupporting portion a of the rotating shaft 2 a of the rotating member 2,the prevention of rotation is effected by the noncircular detent portionb of the rotating shaft 2 a and the fitting portion 3 d formed by therecessed portion in the gear 3, and the driving force of the rotatingshaft 2 a is transmitted to the gear 3. Therefore, as compared with theconventional techniques, the number of component parts used is small,and the assembly is facilitated, so that it is possible to lower thefabrication cost and the assembly cost.

[0071] Since the resilient member 13 constituted by the O-ring isinterposed between the circular supporting portion a of the rtatingshaft 2 a of the rotating member 2 and the hollow cylindrical portion 3a of the gear 3, the play between the rotating shaft 2 a and the fittingportion of the gear 3 is reduced. Since the play can be reduced to nilparticularly during a light load, it is possible to prevent vibrationand abnormal noise during normal winding.

[0072] Since the rotating shaft 2 a of the rotating member 2 is fittedin the hollow cylindrical portion 3 a of the gear 3, and the hollowcylindrical portion 3 a is pivotally supported by the bearing 11 todirectly rotate and support the gear 3, it is possible to overcomefaulty meshing due to the inclination of the gear 3. Hence, it ispossible to prevent the partial wear of the tooth surfaces, preventabnormal noise and vibration, and improve durability remarkably.

[0073] Since the resilient member 13 constituted by the O-ring isinterposed between the circular supporting portion a of the rotatingshaft 2 a of the rotating member 2 and the hollow cylindrical portion 3a of the gear 3, it is possible to prevent abnormal noise and vibrationand improve durability, and it is possible to prevent the entry of waterbetween the rotating shaft 2 a and the gear 3. Therefore, it is possibleto provide a reel having high durability and high waterproofness.

[0074] Since the prevention of rotation is effected by the noncirculardetent portion b of the rotating shaft 2 a and the fitting portion 3 dformed by the recessed portion in the gear 3, and alignment and axialsupport are effected by the circular supporting portion a of therotating shaft 2 a and the hollow cylindrical portion 3 a of the gear 3,the supporting accuracy of the gear 3 becomes high. In addition, sincethe arrangement provided is such that the resilient member 13 isinterposed on the circular supporting portion a, the formation of thegroove for holding the resilient member 13 is facilitated, andprocessing is simplified. In addition, since the play between thefitting portion of the gear 3 and the rotating shaft 2 a is reduced, andthe play can be reduced to nil particularly during a light load, it ispossible to prevent vibration and abnormal noise during normal winding.

[0075]FIG. 5 illustrates a second embodiment and is an enlargedcross-sectional plan view of the rotating shaft and the gear.

[0076] In the second embodiment, the noncircular detent portion b of therotating shaft 2 a of the rotating member 2 is formed by a pin 30, and afitting portion 3 e formed by a recessed portion, into which the pin 30can be fitted, is formed in the gear 3.

[0077] The other arrangements are substantially identical to those ofthe above-described first embodiment.

[0078]FIG. 6 illustrates a third embodiment and is an enlargedcross-sectional plan view of the rotating shaft and the gear.

[0079] In the third embodiment, the noncircular detent portion b of therotating shaft 2 a of the rotating member 2 is formed by a pin 30, and afitting portion 3 e formed by a recessed portion, into which the pin 30can be fitted, is formed in the gear 3.

[0080] The circumferential groove for holding the resilient memberconstituted by the O-ring is not provided in the circular supportingportion a of the rotating shaft 2 a of the rotating member 2. Instead, alarge-diameter cylindrical portion 3 f is formed in the hollowcylindrical portion 3 a of the gear 3, and a resilient member 31 with aconvex cross-sectional shape is fitted thereon.

[0081] The other arrangements are substantially identical to those ofthe above-described first embodiment.

[0082]FIGS. 7 and 8 illustrate a fourth embodiment, in which FIG. 7 isan enlarged cross-sectional plan view of the rotating shaft and thegear, and FIG. 8 is an exploded perspective view of the rotating shaftand the gear.

[0083] In the fourth embodiment, the noncircular detent portion b of therotating shaft 2 a of the rotating member 2 is formed by a collarportion 2 j, which has a greater thickness than the collar portion 2 cin the first embodiment, and a pair of notches 2 k provided on bothsides of the collar portion 2 j. A peripheral groove 2 a is formed inthe collar portion 2 j, and a resilient member 32 constituted by anO-ring is fitted therein.

[0084] A fitting portion 3 g, which is formed by a recessed portion intowhich the noncircular detent portion b formed by the collar portion 2 jhaving large thickness is fitted, is formed in an inner wall surface ofthe central hole 3 c of the gear 3 on one side thereof.

[0085] The other arrangements are substantially identical to those ofthe above-described first embodiment.

[0086]FIGS. 9 and 10 illustrate a fifth embodiment, in which FIG. 9 is across-sectional side elevational view of an essential section of aspinning reel for fishing and an enlarged cross-sectional sideelevational view thereof, and FIG. 10 is an exploded perspective view ofthe rotating shaft and the gear.

[0087] In the fifth embodiment, the rotating shaft cylinder 5 ispivotally supported in the front portion of the reel body 1 by thewaterproof bearing 15, and projects toward the front side.

[0088] The proximal end 5 a of the rotating shaft cylinder 5 is pivtallysupported in the through hole 1 b of the bearing portion 1 a, the pinion5 b is formed integrally with the front side of the proximal portion 5a, and an interlocking gear 33 and the reverse-rotation preventingratchet wheel 16 are fitted over the outer periphery of the rotatingshaft cylinder 5 on the front side of the pinion 5 b in such a manner asto be prevented from rotating.

[0089] The central shaft cylinder 6 a of the rotor 6 is fitted over theouter periphery of the rotating shaft cylinder 5 on the front side ofthe bearing 15, and is fixed by the nut 17.

[0090] The drive gear 2 b meshes with the pinion 5 b of the rotatingshaft cylinder 5, and the rotor 6 is supported so as to be rotated ininterlocking relation to the rotation of the handle 14.

[0091] The spool shaft 7 with te spool 18 attached to its tip isslidably inserted in the central hole 5 c of the rotating shaft cylinder5 in such a manner as to be capable of reciprocating back and forth, anda sliding member 8′ is fitted to the detent portion 7 a at a rear end ofthe spool shaft 7 in such a manner as to be prevented from rotating, andis prevented from coming off by a presser plate 34.

[0092] A through hole is formed in the sliding member 8′ in parallelwith the spool shaft 7, a rotating shaft 35 constituted by a traversecamshaft is inserted therein. An engaging member 36 provided in thesliding member 8′ is engaged in a cam groove 35 a of the rotating shaft35 constituted by the traverse camshaft.

[0093] The rotating shaft 35 constituted by the traverse camshaft ispassed through an unloaded hole 1 e in the bearing portion 1 a, and arear end of the rotating shaft 35 constituted by the traverse camshaftis pivotally supported by a gearing 38 of a side plate 37 attached tothe rear side of the reel body 1.

[0094] The noncircular detent portion b, which is formed by anintermediate-diameter portion 35 b and a pair of notches 35 c providedon both sides of the intermediate-diameter portion 35 b, the circularsupporting portion a formed by a small-diameter portion 35 d, and acircumferential groove 35 e are formed on a tip of the rotating shaft 35constituted by the traverse camshaft.

[0095] The resilient member 13 constituted by the O-ring is fitted inthe circumferential groove 35 e.

[0096] A gear 39 is fitted over the noncircular detent portion b and thecircular supporting portion a so as to be prevented from rotating.

[0097] The small-diameter portion 35 d at the tip of the rotating shaft35 constituted by the traverse camshaft is pivotally supported by abearing 40 fitted in the reel body 1.

[0098] A hollow cylndrical portion 39 a, a gear portion 39 b, and acentral hole 39 c are formed in the gear 39, and a fitting portion 39 d,which is formed by a recessed portion into which the noncircular detentportion b is fitted, is formed in an inner wall surface of the centralhole 3 c on one side thereof.

[0099] The gear 39 meahes with the interlocking gear 33.

[0100] In the fifth embodiment, the rotating shaft 35 constituted by thetraverse camshaft, the gear 39, the interlocking gear 33, and thesliding member 8′ form the oscillation Mechanism whereby the spool 18and the spool shaft 7 are reciprocatable in the back-and-forthdirection.

[0101] The other arrangements are substantially identical to those ofthe above-described first embodiment.

[0102] In the operation of the above-described spinning reel forfishing, if one bail supporting member 20 and the other bail supportingmember 21 are at the fishline taking-up position, and the handle 14 isrotated in the direction in which the fishline 27 is wound around thespool 18, the drive gear 2 b is rotated, which in turn causes therotating shaft cylinder 5 to rotate via the pinion 5 b, thereby rotatingthe rotor 6.

[0103] When the rotating shaft cylinder 5 is rotated, the gear 39 andthe rotating shaft 35 constituted by the traverse camshaft are rotatedby means of the interlocking gear 33, which in turn causes the slidingmember 8′ to reciprocate the spool 18 and the spool shaft 7 back andforth. Hence, the fishline 27, while being guided by the fishline guideroller 24 provided on one bail supporting member 20, is wound inparallel around the spool 18 which is reciprocated back and forth.

[0104] As for the gear 39 to which the driving force is transmitted bythe rotation of the rotating shaft cylinder 5 and the initerlocking gear33, the hollow cylindrical portion 39 a and the central hole 39 c of thegear 39 are fitted to the circular supporting portion a of the rotatingshaft 35 constituted by the traverse camshaft in a state in which theresilient member 13 constituted by the O-ring is interposed between thecircular supporting portion a of the rotating shaft 35 and an inner wallsurface of the central hole 39 c of the gear 39. Further, the preventionof rotation is effected by the noncircular detent portion b of therotating shaft 35 and the fitting portion 39 d formed by the recessedportion in the gear 39, and the driving force of the rotating shaftcylinder 5 is transmitted to the gear 39 and the rotating shaft 35constituted by the traverse camshaft.

[0105] If the fishing reel is constructed as in the fifth embodiment,the hollow cylindrical portion 39 a and the central hole 39 c of thegear 39 are fitted to the circular supporting portion a of the rotatingshaft 35, the prevention of rotation is effected by the noncirculardetent portion b of the rotating shaft 35 and the fitting portion 39 dformed by the recessed portion in the gear 39, and the driving force ofthe gear 39 is transmitted to the rotating shaft 35. Therefore, ascompared with the conventional techniques, the number of component partsused is small, and the assembly is facilitated, so that it is possibleto lower the fabrication cost and the assembly cost.

[0106] Since the resilient member 13 constituted by the O-ring isinterposed between the circular supporting portion a of the rotatingshaft 35 and the inner wall surface of the central hole 39 c of the gear39, the play between the rotating shaft 35 and the fitting portion ofthe gear 39 is reduced. Since the play can be reduced to nilparticularly during a light load, it is possible to prevent vibrationand abnormal noise during normal winding.

[0107] Although in the foregoing description a description has beengiven of the spinning reel for fishing as the fishing reel, theinvention may be implemented for the rotation-prevented fitting betweenthe rotating shaft and the gear of other type of reel as well.

[0108] As described above, the invention is implemented in theabove-described forms, and offers the following advantages.

[0109] In accordance with claim 1, a hollow cylindrical portion of agear is fitted over a circular supporting portion of a rotating shaft,the prevention of rotation is effected by a noncircular detent portionof the rotating shaft and a fitting portion formed by a recessed portionin the gear, and the driving force of the rotating shaft is transmittedto the gear. Therefore, as compared with the conventional techniques,the number of component parts used is small, and the assembly isfacilitated, so that it is possible to lower the fabrication cost andthe assembly cost.

[0110] Since a resilient member is interposed between the circularsupporting portion of the rtating shaft and the hollow cylindricalportion of the gear, or a resilient member is interposed between thefitting portion and the noncircular detent portion, the play between therotating shaft and the fitting portion of the gear or between therotating shaft and the fitting portion of the gear is reduced. Since theplay can be reduced to nil particularly during a light load, it ispossible to prevent vibration and abnormal noise during normal winding.

[0111] In accordance with claim 2, the rotating shaft is fitted in thehollow cylindrical portion of the gear, and the hollow cylindricalportion is pivotally supported by a bearing to directly rotate andsupport the gear, it is possible to overcome faulty meshing due to theinclination of the gear. Hence, it is possible to prevent the partialwear of the tooth surfaces, prevent abnormal noise and vibration, andimprove durability remarkably.

[0112] In accordance with claim 3, since the resilient member isinterposed between the circular supporting portion of the rotating shaftand the hollow cylindrical portion of the gear, it is possible toprevent abnormal noise and vibration and improve durability, and it ispossible to prevent the entry of water between the rotating shaft andthe gear. Therefore, it is possible to provide a reel having highdurability and high waterproofness.

[0113] In accordance with claim 4, since the prevention of rotation iseffected by the noncircular detent portion of the rotating shaft and thefitting portion formed by the recessed portion in the gear, andalignment and axial support are effected by the circular supportingportion of the rotating shaft 2 a and the hollow cylindrical portion ofthe gear, the supporting accuracy of the gear becomes high. In addition,since the arrangement provided is such that the resilient member isinterposed on the circular supporting portion, the formation of a groovefor holding the resilient member is facilitated, and processing issimplified. In addition, since the play between the fitting portions ofthe gear and the rotating shaft is reduced, and the play can be reducedto nil particularly during a light load, it is possible to preventvibration and abnormal noise during normal winding.

What is claimed is:
 1. A fishing reel including a reel body foraccommodating components of a reel and a drive mechanism provided insaid reel body for winding a fishline around a spool, comprising: aresilient member interposed between a rotating shaft which is rotated bythe rotation of said drive mechanism and a rotation-prevented fittingportion of a gear so as to prevent play between said gear and saidrotating shaft.
 2. A fishing reel including a reel body foraccommodating components of a reel and a drive mechanism provided insaid reel body for winding a fishline around a spool, wherein: arotating shaft which is rotated by the rotation of said drive mechanismand a gear are fitted to each other in such a manner as to be preventedfrom rotating relative to each other; a hollow cylindrical portionextending from said gear in an axial direction of said rotating shaft isformed; and a bearing is interposed between said hollow cylindricalportion and said reel body so as to rotatably support said rotatingshaft by said reel body.
 3. The fishing reel according to claim 2,wherein a resilient member is interposed between fitting portions ofsaid gear and said rotating shaft which is fitted to said gear in such amanner as to be prevented from rotating with respect to said gear so asto prevent play between said gear and said rotating shaft.
 4. Thefishing reel according to claim 1 or 3, wherein said fitting portions ofsaid gear and said rotating shaft are respectively formed by anoncircular detent portion and a circular supporting portion, and saidresilient member is interposed between said circular supporting portionand a circular hole portion of said gear so as to prevent the playbetween said gear and said rotating shaft.
 5. A concentrically couplingstructure, provided to a fishing reel, for coupling a rotary shaft to ahollow cylindrical gear, said structure comprising: a circular outersurface of the rotary shaft; a noncircular outer surface of the rotaryshaft, contiguous to the circular outer portion; a circular innersurface of the gear, to be fitted to the circular outer surface; anon-circular inner surface of the gear, contiguous to the circular innersurface, and to be fitted and non-rotatably coupled to the noncircularouter surface; and a resilient member provided to at least one of aninterface between the circular inner and outer surfaces and an interfacebetween the noncircular inner and outer surfaces.
 6. The structureaccording to claim 5, wherein the resilient member is installed in anannular groove formed in at least one of the circular outer surface, thenoncircular outer surface, the circular inner surface and thenoncircular inner surface.
 7. The structure according to claim 5,wherein the noncircular outer surface is defined by a pin diametricallyextending through and protruded from the rotary shaft.
 8. The structureaccording to claim 5, wherein the noncircular outer surface is definedby a noncircular collar.
 9. The structure according to claim 5, whereinsaid gear has an outer circular surface that is radially opposite fromthe circular inner surface and that is to be fitted to a bearingprovided to the fishing reel.